Well stop knocking VOES, which is proven and great! You can't have your cake AND eat it! I ran aftermarket ignition (Crane) with VOES and EV27 for many years, then later with a tuned stroker - perfectly good stuff and doesn't deserve your persistent denigration. Move on, there's a good chap! John has decades of experience building Harleys and knows his stuff too.

 

No doubt, I was finished when I made my first statment about VOES but everyone has their opinion to drag this rediculous subject down the road. Im having a good time being just as opinionated as everyone else. In no way am I trying to degrade anyones expertise because Im am the least of these. VOES is fine as wine but I have a diffrence of opinion just as you do. If this is getting on someones nerves then they should not perpetuate it. I am just here to learn and have a good time.

 

Now who's making an assumption??? Your "superior Dyna" will blow my doors off!!!! First you know nothing about my bike. So let me educate you a bit, first my bike has no doors, secondly it has 142 HP at the rear wheel, with 154 torque. So I believe it could probably keep up with your "superior Dyna". The whole purpose of this forum is to give educated information in response to posted question, not state opinions unless you clearly state it is your opinion.
The VOES does not hurt performance on street bikes and in fact in a high load situation can actually help performance by preventing/limiting detonation. If you choose not to run on on your Dyna, great it is a lighter bike and you can probably get away with it. Heavier bike/rider combinations can and do benefit from the use of a VOES.
John

 

Aces - I've built or had a hand in building lots of hotrod HD engines, including a couple that we've run at the Salt Flats. You're correct that the stock ignition modules are insufficient for a performance application. Do you know why?

In my dyno testing, I've found that the stock curves bring in way too much total advance, and bring it in way too late in the RPM range. My personal preference for a high-compression engine w/a nice tight squish and a decent combustion chamber shape is the Daytona Twin Tec - it uses VOES, and you can program in any advance you want in very granular RPM increments. In my EVO FXRT, I run an Ultima single-fire, w/VOES, and some very minor headwork. It's not as fast as my XLs, but, it works very well.

You really sound like you're making assumptions about something that you don't understand, based upon a less than complete data source. If you'd like to refocus the discussion in that direction, I'd be happy to participate. If you'd rather spout "old-school barstool advice" that really has no basis in current reality, then have at it by yourself.

 

When I said superior Dyna I was talking Dyna ignition. So did you take the doors off to get that 142 hp? The Dyna "ignition" has it's own advance so yes I can get away with not running a VOES. Thanks

 

I am quite aware that you can use a Voes or not with the Dyna tech / Daytona Twin Tech and you can program them in any advance you want. Also, your single fire has no use in the real world. So looks to me we have been at the same, old-school bar stool. Thanks for the education.